Diet of common dolphinfish (Coryphaena hippurus) in the Pacific coast of Ecuador

2016 ◽  
Vol 97 (1) ◽  
pp. 207-213 ◽  
Author(s):  
José Luis Varela ◽  
Cristhian Ronald Lucas-Pilozo ◽  
Manuel María González-Duarte
Keyword(s):  
Pacific Coast ◽  
Feeding Habits ◽  
Dosidicus Gigas ◽  
Invertebrate Species ◽  
Coryphaena Hippurus ◽  
Important Prey ◽  
The Pacific ◽  
The Common ◽  
Hippocampus Hippocampus ◽  
High Degree

The diet and the feeding habits of the common dolphinfish (Coryphaena hippurus) in the Pacific coast of Ecuador was assessed by examining 320 stomachs of individuals ranging from 51 to 149 cm in total length. Fish was the predominant prey group in the diet (Alimentary Index, %AI = 95.39) followed by cephalopods (%AI = 4.13) and crustaceans (%AI = 0.48). Among the 17 prey items that make up the dolphinfish diet, the Exocoetidae family was the most important prey (%AI = 57.13), Dosidicus gigas being the most abundant invertebrate species (%AI = 7.65). Feeding patterns were evaluated using the graphing method of Amundsen, which suggested that this species shows a varying degree of specialization on different prey taxa. Thus, while some species were unimportant and rare (Hippocampus hippocampus, Lagocephalus lagocephalus, Gobiidae and Argonauta sp.), several dolphinfishes showed a high degree of specialization on Scombridae, Pleuroncodes planipes, Portunus xantusii and Opisthonema libertate. Size-related and temporal shifts in dietary composition were investigated by PERMANOVA analysis, which showed wide variations among size classes and periods of capture. The results of this study indicate that the common dolphinfish is an opportunistic feeder, which is capable of consuming a wide variety of schooling epipelagic organisms.

Feeding habits of the Pacific bearded brotula Brotula clarkae Hubbs, 1944 (Ophidiidae) along the Pacific coast of Costa Rica, Central America

2016 ◽  
Vol 32 (3) ◽  
pp. 439-447 ◽  
Author(s):  
B. Naranjo-Elizondo ◽  
M. Espinoza ◽  
M. Herrera ◽  
T. M. Clarke ◽  
I. S. Wehrtmann
Keyword(s):  
Costa Rica ◽  
Central America ◽  
Pacific Coast ◽  
Feeding Habits ◽  
The Pacific

scholarly journals Reproductive biology and feeding habits of the common dolphinfish Coryphaena hippurus (Linnaeus, 1758) off Saurashtra coast, India

2018 ◽  
Vol 65 (4) ◽  
Author(s):  
Jyoti Saroj ◽  
K. Mohammed Koya ◽  
K.L. Mathew ◽  
Panja Tehseen
Keyword(s):  
Reproductive Biology ◽  
Feeding Habits ◽  
Fork Length ◽  
Reproductive Activity ◽  
Monthly Basis ◽  
Coryphaena Hippurus ◽  
Saurashtra Coast ◽  
The Common ◽  
One Year ◽  
The One

The present study analysed reproductive biology and feeding habits of the common dolphinfish Corphaena hippurus, along the Saurashtra coast of India. The study is based on an investigation of 295 specimens caught using drift gillnet at Veraval. The samples were collected on a monthly basis between March 2015 and February 2016. The sex ratio was 1:1.75 with a significant dominance of females in the population. The size at maturity for females was 593 mm FL (fork length). Absolute fecundity of the individuals ranged from 1,07,813 to 15,50,400 having ova diameter range of 0.3-1.96 mm. C. hippurus spawned throughout the year with its reproductive activity peaking in April and December. Thus the dolphin fish has an extended spawning season; during which it laid eggs almost continuously. A total of 128 stomachs of C. hippurus, whose fork length FL ranged from 380 to 1250 mm were examined during the one year period of this study. Tunas were found to be the common dietary component of the dolphinfish.

Plesiosaur ancestors from the upper permian of Madagascar

1981 ◽  
Vol 293 (1066) ◽  
pp. 315-383 ◽  
Keyword(s):  
Pacific Coast ◽  
Feeding Habits ◽  
Upper Permian ◽  
Postcranial Skeleton ◽  
Aquatic Locomotion ◽  
Tectonic Environment ◽  
The Pacific ◽  
Marine Iguanas ◽  
Phosphate Source ◽  
Rift Valleys

Numerus well preserved fossils from the Upper Permian of Madagascar are structurally intermediate between primitive diapsid reptiles and nothosaurs and plesiosaurs. Claudiosaurus germaini (gen.nov., sp.nov.) is similar in its basic anatomy to eosuchian reptiles such as Thadeosaurus colcanapi (gen.nov., sp.nov.), but the absence of a lower temporal bar and the closure of the palate are characteristics of sauropterygian reptiles. Claudiosaurus shows the initiation of aquatic adaptations in the proportions and reduced ossification of the carpus and manus. A third pair of sacral ribs is partially incorporated. The small size of the skull, the nature of the palate and marginal dentition and the long neck are suggestive of aquatic feeding habits. Claudiosaurus does not, however, show the specific adaptations for aquatic locomotion seen in either nothosaurs or plesiosaurs. Even the most primitive known species of nothosaurs and plesiosaurs are too specialized in the postcranial skeleton for direct comparison with Claudiosaurs , although the similarities to the skull roof of primitive nothosaurs are very close. The configuration of the cheek in nothosaurs almost certainly resulted from the loss of the lower temporal bar from a pattern like that of Youngina , rather than from the ventral emargination of the cheek. The nature of the Upper Permian sediments in Madagascar and the tectonic environment of their deposition indicate accumulation in deep rift valleys, some parts of which were open to the sea. The presence of oolites replaced with collophane suggests a rich phosphate source such as deep marine upwellings. Similar upwellings of phosphate have also been associated with the evolution of the marine iguanas on the Pacific coast of South America. The concept of the derivation of nothosaurs from protorosaurs or araeosceloids may be traced to misunderstandings of the nature of the cheek in both Nothosaurus and Protorosaurus . Araeoscelis , despite the possession of a solid cheek, is closely related to Petrolacosaurus , an ancestral diapsid.

Descriptions of Acanthocephalus parallelcementglandatus (Echinorhynchidae) and Neoechinorhynchus (N.) pennahia (Neoechinorhynchidae) (Acanthocephala) from amphibians and fish in Central and Pacific coast of Vietnam, with notes on N. (N.) longnucleatus

2018 ◽  
Vol 63 (3) ◽  
pp. 572-585 ◽  
Author(s):  
Omar M. Amin ◽  
Richard A. Heckmann ◽  
Nguyen Van Ha
Keyword(s):  
Pacific Coast ◽  
South Coast ◽  
North Coast ◽  
Female Specimen ◽  
Male Specimen ◽  
The Pacific ◽  
Central Vietnam ◽  
The Common ◽  
Males And Females ◽  
Coast Of Vietnam

Abstract Three species of acanthocephalans are described from fishes caught in the Pacific coast off eastern Vietnam and from amphibians in the midlands in 2016: (1) Acanthocephalus parallelcementglandatus Amin, Heckmann, Ha, 2014 (Echinorhynchidae), described from 1 male specimen is now fully described from males and females collected from 2 species of amphibians, the similar frog Hylarana attigua Inger, Orlov, Darevsky and the odorous frog Odorrana sp. Fei, Ye, Huang (Ranidae) in Huong Thuy, Hue City and Chu Yang Sin Park, central Vietnam, respectively, as well as from the needlefish Tylosurus sp. Cocco (Belonidae) in Binh Thuân in the Pacific South. The allotype female is designated. Neoechinorhynchus (N.) pennahia Amin, Ha, Ha, 2011 described from 1 female specimen is now fully described from males and females collected from the Toli shad (Chinese herring), Tenualosa toli (Valenciennes) (Clupeidae) in the Pacific north coast off Haiphong. The allotype male is designated. One specimen of Neoechinorhynchus (Neoechinorhynchus) longnucleatus Amin, Ha, Ha, 2011 is also reported from the common ponyfish, Leiognathus equulus (Forssskål) (Leiognathidae) in the Pacific south coast of Nha Trang and its ecology briefly discussed.

scholarly journals Solid waste management in transition

2019 ◽  
pp. 37-45
Author(s):  
Maria Belova
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Pacific Coast ◽  
Solid Waste Management ◽  
Time Period ◽  
The Pacific ◽  
The Common ◽  
Common Problems ◽  
Cis Countries ◽  
The Eu

While constructing market economies on the ruins of the central planning systems from theeastern part of Germany to the Pacific coast of Russia, many countries have faced a number ofsimilar problems in the field of the solid waste management. But in the so called 'economiesin transition' these problems were treated in different ways,The group of the countries of Central and Eastern Europe on their way to the EU membershipadopted the European principles of the SWM. They were to find an adequate solution to theessential waste problems earlier and in the very limited time period, On the other hand, thecountries that now belong to the CIS, had somewhat put the problems of the SWM aside,therefore the process is in the most cases yet in its primary stage still. On their way to theeffective SWM, these countries often orient towards the European model as well, thoughhaving more freedom in adapting it to the national circumstances.The objective of the paper presented is to analyze the common problems of the countries intransition, evaluate the effectiveness of the European shaped solutions for the EU newmember states and highlight the positive and negative points to be aware of when reformingSWM in the CIS countries.

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